Temperature-controller



Patented M31. 9, 1920.

2 SHEETS-SHEET1.

A; ROIESCH.

TEMPERATURE CONTROLLER.

APPLICATION HLED AUG-28.1914.

INVENTOR 0T ()i 0 4| flLF/Q'ED/fflfiC/f Y 0.11, mwq

ATTORNEYS WITNESSES A. ROESCH.

TEMPERATURE CONTROLLER.

APPLIVCATION FILED AUG.28.1914.

Patented Mar. 9, 1920.

2 SHEETS-SHEET 2.

WITNESSES ATTORNEYS and the features of novelty UNITED STATES PATENTOFFICE.

v ALFRED ROESCH, OF BROOKLYN, NEW YORK, ASSIGNOR. TO CHARLES J.TAGLIABUE MANUFACTURING, 00., OF BROOKLYN ZNEW YORK, A CORPORATION OFNEW YORK.

To all whom it may concern:

Be it known that citizen of the United States, and a resident of theborough of Brooklyn, county of Kings, city and State of New York, haveinvented certain new and useful Improve ments inTemperature-Controllers, of which the following is a specification.

y invention relates to temperature controllers and has for its object toprovide a device which, within a given or predetermined period of time,will automatically control a heating or cooling medium in such a, manneras to produce temperature changes at a predetermined place correspondingto anygiven temperature curve indicated, for instance, on a temperaturechart. Myimprovement also contemplates the provision of means forautomatically sounding an alarm at the end of the given or predeterminedperiod of time and for coincidentally actuating a blow-01f valve wherebythe heating or cooling medium present at the pre determined place isquickly dissipated and any further efl'ect thereof thus immediatelyprevented. Other objects of my invention will appear from thedescription hereinafter will be pointed out in the appended claims.

Reference is to be had to the accompanying drawings which show anexample of my improved contro ler and an application. thereof and inwhich Figure 1 is aside ."BlBVEItiOH. illustrating my invention combinedwith a vulcanizing enlarged similar Fig. 3 is a front Figs. 4 and 5areface and edge views of one form of actuating cam; and Fig. 6 is a detailview of. a key used in connection with my device.

As illustrated in the drawings my improvement comprises an uprightsupport ';10 secured to or forming part of a base 11 and having anexternally screw-threaded sleeve 12 adapted for connection with theelement in which the temperature is to be controlled, the illustratedexample showing a vulcanizer 13 of any well known type. The uprightsupport 10 is further provided on its one face with lugs-14 betweenwhich a main lever 15 is pivoted at 16, said lever at its lower endcarrying a casing 17 secured in position by means of screws 18 andcontaining an ordinary clock movement 19.

plant; Fig. 2 is an view partly in section;

TEMPERATURE-CONTROLLER.

Specification of Letters Patent. Application filed August 28,1914.Serial No.

I, ALFRED RoEsoH, a

enough to cause elevation of my device;

' said spring, this Patented Mar. 9, 1920.

The hour through the casing 17 and carries a cam 21, templetor itsequivalent which is preferably removably secured to said spindle bymeans *of a frictional connection strong the saidspindle 20, whilepermitting said cam to be adjusted relatively to the same in anyconvenient manner as by means of a stem 22 having an angular or squaredend spindle 20 of the latter extends v the cam 21 to rotate with 23 forthe accommodation of a suitable key 23. x

The stem 22 may, if desired, be rotatably supported adj acent to itsfree end by means of an upright plate 22 secured to or forming part ofthe base 11 and in addition may carry a pointer 22 movable across theface of a dial plate 22 located on said plate 22 and containing anysuitable designations on its face, or merely containing an indicationdesignating the starting point of the cam 21.,. These latter devicesare, however, not absolutelynecessaryand may be omitted if desired. Thecam 21 is arranged to cooperate with a roller 24 rotatably mounted atone end ofan auxiliary lever 25 pivotally mounted at 26 on the mainlever 15 and carrying an adjusting screw 27 provided with an angular orsquared end 28 adapted to receive the key 28 whereby said screw 27 maybe actuated for the purposes to be more fully set forth hereinafter. Theinner end of the screw 27 is located opposite to a capsular spring29connected by means of a tube 30 which extends through the sleeve 12,with a sensitiy e member 31, the latter in the present illustrationbeing located within the vulcanizer 13 as shown in Fig. 1. The saidsensitive member 31 may be arranged to operate, the said capsular spring29 in any desired manner; for instance, said member may be filled with avolatile-fluid adapted to expand and con- .tract as the temperature inthe vulcanizer' 13 changes and thus expand and contract' being a wellknown arrangement. A relatively strong compression spring 32 is locatedabove the pivots 16 and 26 between the free end of the aux iliary level-25 and the main lever 15 and normally tends to separate said levers, thesaid spring in some cases surrounding the adjusting screw 27 betweensaid levers. A relatively light compression spring 33 is located belowthe points 16 and 26 and has clearly its one end in engagement with thesupport 10 and its opposite end abutting against the main lever 15, thusnormally tending to move the lower end of said main lever 15 away fromsaid support 10. At its upper end the main lever 15 carries a projection15 located in alinement with a valve stem 34 secured to a combined inletvalve 35 and outlet valve 36 located in a chamber 37 of a valve body 37and controlling respectively an inlet passage sage 39 formed in saidvalve body 39, the latter being preferably formed integral with theupright support 10 as shown best in Fig. 2. The inlet passage 38communicates with a branch pipe 40 connected by means of a main pipe 41with a tank 42in which air is compressed by means of the air compressor43 suitable gages 44 and 45 being provided for indicating the pressurein the tank 42 and in the pipes 40 and 41. The valve body 37 is furtherformed with a channel 46 communicating with the chamber 37 and with apipe 47 connected with the diaphragm chamber 48 of a diaphragm motor.valve 49 located in the inlet pipe 50 through which steam or otherheating medium is admitted to the vulcanizer 13, a coil spring 51surrounding the stem of said valve 49 in the customary manner. I

A second branch pipe 52 connects the main pipe 41 with an inlet channel53 communicating with a chamber 54, both being formed in a valve body 55secured to or forming part of the base 11 as shown in Fig. 2. A combinedinlet and outlet valve 56 and 57 is located in said chamber 54 andcontrols said inlet channel 53 and an outlet passage 58 also formed insaid body 55 and surrounding the stem 59 by which the combined valve5657 is carried. The free end of the stem 59 is located adjacent to anarm or lever 60 pivotally mounted at 61 on lugs 62 forming part of orsecured to the body 55 and movable against the tension of a' coil spring63 as clearly shown member 64 adapted tain conditions to be hereinafterwith a stationary contact member-65 to close an electrical circuit 66'including a source of electrical energy 67 and an alarm 68. The one endof the arm 60 extends into the path of a pin or projection 69 carried byand movable with the cam 21 whereby said arm 60 is actuated at the timethe flow of the heating or cooling medium is cut ofl, or in other wordswhen the particular process in question is to be discontinued.

An additional channel 70 is located in the valve body 55 and connectsthe chamber 54 thereof with a pipe 71 which in turn communicates withthe diaphragm chamber 72 of a diaphragm motor valve 73 controlling ablow-oft or exhaust pipe 74 extending from 38 and an outlet paspletionof the vulcanizing provided with a gradually more or in Fig. 3. The saidarm- 60 carries a preferably adjustable contact to coiiperateunder-cermore fully described tion the roller the vulcanizer 13, acoilspring 75 also surrounding the stem of said valve 73 as shown bestin Fig. 1. In the illustrated example of an application of my invention76 is an air vent controlled by a valve 77 and 7 Ellis a drain pipethrough which the products of condensation may be removed from thevulcanizer 13, the said drain pipe 78 being also controlled by a valve79.

If desired the arrangement may include a temperature recordinginstrument whereby it may working satisfactorily and the desiredtemperature changes are being secured. In the illustration a twelve hourtemperature recorder 80 of any well known construction is shownconnected by means of a tube 81-with a sensitive member 82 secured toand extending into the vulcanizer 13 as shown in Fig. 1. The mechanism,if desired, may be probe determined if the apparatus is tected by acover 83 detachably secured in to the support 10 and hour, to 220 F. in

in eight hours, to 267 in nine hours, and to 270 F. in ten hours andtocut off the supply of heating medium, which in the present instance issteam at fifteen minutes after the tenth hour thus producing a gradualrise in temperature of varying degrees and a comho-urs and fifteenminutes. 0 secure this result the cam'21 as shown in Figs. 4 and 5 lessregularly inclined surf-ace 21 with a transverse portion 21 connectingthe highest and lowest portions thereof. To obtain different variationsin temperature the cam 21 is shaped to correspond in each individualinstance as will be clear from the description of the operation whichfollows. Y

The adjusting screw 27 is first set at 200 and the cam 21 is adjusted toits starting point by means of the key 23 in which posi- 24 isinengagement with the lowest portion of the surface 21 and the steamisturned on, it being assumed that the clock movement has been previouslystarted. The sensitive member 31 being substantially cold at the startof the operation, the capsular spring 29 will be contracted and out ofcontact with the adjusting screw 27 so ,that the projection 15 on thelever 15 under diaphragm chamber 48 is in communication with theatmosphere through the pipe 47 pirocess in ten the spring 51 and thusshut off the supply of steam to the vulcaiiizer because of the action.

. tatably advanced and lever 15.

channel 46, chamber 37 and passage 39 so that the motor valve 49 is openand steam is admitted to the vulcanizer 13. In consequence the sensitivemember 31 becomes heated so that the volatile fluid therein expands andin turn expands the-capsular spring 29 toward the right in Fig. 2 whichspring finally engages the adjusting screw 27 as the temperature inthe.vulcanizer 13 reaches 200. As the movement of the capsular spring 29toward the right in Fig. 2 continues under the influence of the risingtemperature in the vulcanizer 13 pressure will be exerted by said spring29 upon the adjusting screw 27 which as a result is also moved towardthe right in said figure. This movement of said screw 27 causes theauxiliary lever 25 to swing upon its pivot 26, the

- upper end of said levermoving also toward the right, which movementwill be transmitted through the medium of the spring 32 to the upperportion of the main lever 15. As a result of this the latter will beswung upon its pivot 16 to compress the spring 33 and said lever'15 andall of the elements carried thereby,- including the auxiliary lever 25will assume a tilted position without, however, changing the relationbetween the cam 21, the auxiliary lever 25 and the spring 32, withreference to the main lever 15; that is to say, during this operationthe levers 15 and 25 move substantially 'as a unit upon the pivot 16 andthereby move projection 15 toward the right in Fig. 2 and away from theend of the stem 34. The latter is thus relieved from restraint so thatthe combined valve 35-36 will be moved by the air pres sure in the pipe40 and passage 38 to partially or completely close the outlet passage 39and to establish communication between the diaphragm chamber 48 and theair tank 42 through the pipe 47, channel 46, chamber '37, passage 38 andpipes 40 and 41. Air under pressure will thus rush into said diaphragmchamber 48 and will actuate the diaphragm therein to partially orentirely close the valve 49 against the tension of partially or entirely13. At the same time; of the clock work 19, the cam 21 is being rothus,by exerting pres sure upon the roller 24, swings the lower end of theauxiliary lever 25 inwardly or towardthe left in Fig. 2, whereby saidlever 25 is rocked upon the pivot 26 relatively to the main lever 15 tocompress the spring end of the adjusting otal movement of the auxiliarylever 25 is possible because it is pivoted upon the main As theadjusting screw 27 is thus moved away from the capsular spring 29 andits restraining force thus removed from said screw 27, the spring 33will swing the main lever 15 and with it all the elements it carriesincluding the auxiliary lever 25,

upon the pivot 16 in a direction to bring the projection 15 intoengagement with the stem 34 so that the combined valve 3536 will againbe pressed down to open the outlet passage 39 and to close the air inletpassage38. Thecompressed air in the diaphragm chamber 48 willimmediately rush out through the pipe 47, channel 46, chamber 37 andpassage 39 and the valve 49 will be opened by the action of the spring51 to again admit a supply of. steam to the vulcanizer 13, Thetemperature in the latter is thus further raised and the capsular spring29 actuated to a further degree by the volatile fluid in the sensitivemember 31. The further expansion of the capsular spring 29 continuesduring this step until said spring overtakes and again contacts with andactuates the adjusting screw 27. As the said adjusting screw 27 is againmoved by the capsular spring 29 as described, the main and auxiliarylevers 15 and 25 will again be vibrated on their respective pivots andin consequence will move the projection 15 away from the stem 34. Theair pressure will now again actuate the combined valve 34-36 topartially, or entirely close-the outlet passage 39 and open the airinlet channel 38 and thus again permit compressed air to rush into thediaphragm chamber 48 and again actuate the diaphragm therein to againpartially or entirely close the valve 49 and thus again reduce or cutoff the flow of steam to the vulcanizer 13. 'As the cam 21 continues torotate these operations will be repeated as the various designateddegrees of temperature are reached in the vulcanizer and the supply ofsteam to the vulcanizer will be periodisuccessively during the entireprocess andof time as described to predetermined period articularvarlations 1n temperproduce the ature herein efore mentioned, the cam 21being shaped to insure this result. As the cam 21 continues to rotatethe roller 24'will finally reach the highest end thereof and, if

free to do so, would drop therefrom along to partially or entirely thetransverse portion 21 to the lowest end of said cam, under the action ofthe spring 32, and 'thustend to swing the upper end of the auxiliarylever 25 to the left in Fig. 2. As the adjusting screw 27 is, however,

in contact with the capsular spring 29 this pivotal movement of saidlever 25 is resisted with the result that the cam 21, clockwork 17 andconnected parts move to the left in Fig. 2 relatively to the roller 24:,under the influence of the spring 32, as soon as said roller has passedbeyond the highest end of said cam 21. This movement to the left of theparts mentioned is communicated to the main lever 15 which isaccordingly rocked on its pivot 16 in a direction to move the projection15 away from the stem 34. The pressure of the compressed air in the pipea0 will now be free to move the valve 3536 to completely close theoutlet passage 39 and to completely open the air inlet channel 38 sothat air under pressure now passes through the chamber 37, passage 46and pipe l7 into the diaphragm chamber 48 and causes a complete closingof the valve 49 and a complete cutting oil of the flow of steam to thevulcanizer 13. At the same time, the projection 69 engages the end ofthe arm 60 and swings the same on its pivot 61 against the tension ofthe spring 63 and thus brings the contact member 64 into engagement withthe contact member 65 whereby the electrical circuit 66 is closed andthe The. described actualarm 68 is sounded. ation of the .arm 60 alsomoves it away from the stem 59' and permits the compressed air in'thepipe 52 and channel 53 to raise the combined valve 56-57 and close theoutlet passage 58 and open communication between said pipe 52 and thepipe 71 through the channel 53, chamber 54, and passage 70. Compressedair is thus free to enter the dlaphragm chamber? 2 and actuate thediaphragm therein to open the valve 7 3 whereby any steam remaining inthe vulcanizer 13 is quickly blown off or exhausted through the pipe 7 4so that said steam will have no further effect on the temperature in thevulcanizer 13. These latter operations take place coincidentally at theend of the predetermined period of time, in the present eX- ample tenhours and fifteen minutes, and result in a complete cutting oif of theflow of live steam to the vulcanizer 13, a complete blow-off of steamremaining therein and the sounding of an alarm immediately at the end ofthe particular process in hand.

During the operation of the apparatus as described and illustrated, thesensitive member 82 will actuate the pointer or needle of the recordinginstrument 80 so that the resulting chart which is produced by thismeans will at all times immediately show whether the desired temperaturecurve is being secured and whether the apparatus is workingsatisfactorily in the desired manner. It will, of course, be understoodthat any desired fluctuations or variations may be secured in a giventime in the same manner as described by simply shaping the. cam 20properly and combining same with the appa- 'ratus in the illustratedmanner.

lutely reliable apparatus of the simplest in an absolutely predeterminedcontrol of temperature is desired.

'My invention is entirely automatic in action and does away with thenecessity for.

the services of an operator which are abso lutely necessary inconstructions at present in use. In such constructions it is necessaryfor the said operator. to keep a constant watch on the time and on thetemperature and to manually adjust the apparatus for each variation inorder to obtain what, at best, are merely approximately accurateresults. My improvement on the contrary, after being set in operation,needing no special attention and being absolutely automaticin operationwill accurately produce the intended results and constantly reproducethe same as often as desired,

Various changes in the specific form shown and described may be madewithin the scope of the claims without departing from the spirit of myinvention.

I claim:

1. A temperature controller comprising means for regulating the flow ofa heating or cooling medium to a given point, means for actuating saidregulating means whereby temperature variations following apredetermined curve are produced at said given point within a givenperiod of time, and mechanism whereby the operation of said actuatingmeans is controlled and whereby a complete closing of the regulatingmeans is automatically brought about when the end of the predeterminedcurve is reached.

2. A temperature controller comprising a valve for controlling the flowof a heating or cooling medium to a given point, a connection from saidvalve to a source of compressed fluid whereby said valve is actuated toregulate the flow of said medium. mechanism for controlling the flow ofsaid fluid whereby temperature variations following a pre-determinedcurve are produced at said given point within a given period of time,and means whereby the operation of said mechanism is controlled andwhereb a. complete closing of said valve is automatically brought aboutwhen the end of the predetermined curve is reached.

3. A temperature controller comprising means for controlling the flow ofa heating or cooling medium to a given point, a sensi- I controllingmeans, and means for causing an independent operation of one of saiddevices to open said controlling means.

* ,tion with the said double valve actuating said cam, a sensitive 4. Atemperature controller comprising. a double valve controlling aconnection with a source of compressed fluid and a connec atmosphere, adiaphragm motor valve controlling the flow of a heating or coolingmedium, a connection between and said diaphragm motor valve, pivotedmeans connected with said double valve, a sensitive device for actuatingsaid pivoted means to operate said double valve and open said compressedfluid connection whereby said motor valve is actuated to reduce the flowof said medium,

a cam .for actuating said pivoted means independently of said sensitivedevice to operate said double nection with the atmosphere whereby saidmotor valve is actuated to increase said flow and mechanism foractuating said cam.

5. Thecombination of a diaphragm motor valve controlling the flow of aheating or cooling medium, means for causing an actuation of said motorvalve, a pivoted main lever adapted to actuate said means, a camrotatably carried by said main lever, mechanism carried. by said mainlever for actuating said cam, a sensitive device, an auxiliary leverpivotally mounted on said main lever and arranged to be moved by saidcam relatively to said main lever and said sensi main lever adapted toactuate sai-d' means,1

a cam rotatably carried by said main lever, mechanism carried by saidmain lever'for device, an auxiliary lever pivotal-1y mounted on saidmain lever and arranged to be moved by said cam relatively to said mainlever and said sensitive device, a spring located between said leverswhereby said levers are caused to move together under the influence ofsaid sensitive device, a second spring for moving said main leverrelatively to said auxiliary lever to actuate said means, a blow-oil", avalve controlling said blow-off, and means connectedwith said cam foropeninr; said valve at a predetermined time.

7. The combination of' a diaphragm motor valve controllingthe flow of aheating or cooling medium, means for causing an actuation of said motorvalve, a pivoted main lever adapted to actuate said means, a camrotatably carried by said main lever, mechanism carried by said mainlever for actuating said cam, a sensitive device, an auxiliary levervalve and open said conpivotally mounted on said main lever and arrangedto be moved by moving said main lever relatively to said auxillary leverto actuate said means, an

electrical circuit including an alarm, and means connected with said camfor closing said circuit to sound said alarmf 8. The combination of adiaphragm motorvalve controlling the flovy of a heat ing or coolingmedium, means for causing an actuation of said motor valve, a pivotedmain lever adapted to actuate said means, a cam rotatably carried bysaid main lever, mechanism carried by said main lever vfor actuatingsaid cam, a sensitive device, an auxiliary lever pivotal'ly'mounted onsaid mainlever and arranged to be -moved by said cam relatively to saidmain lever and said sensitive device, a spring-located betweensaidlevers whereby said levers are.

an electrical circuit including an alarm and means connected with saidcam for coincidentally opening said valve and closing whereby saidlevers are 7 said circuit to sound said alarm at a pre-y determinedtime.

9. A temperature controller comprising. mechanism for automaticallycontrolling the flow of a heating .or cooling medium to a given pointwhereby the temperature at said given point is controlled and meansactuated bysaid mechanism whereby said medium is permitted to escapefrom said given point .when a final temperature has been reachedthereat.

10. The combination of an element in which temperature regulation isdesired, a connection from a source of temperature varying medium tosaid element, a valve in said connection for controlling the flow ofmedium 'to said element, a connection said valve to an actuating medium,means controlling said valve connect on, a pair of levers adapted tomove in unlson and independently, means controlled by the temperature insaid element to actuate said levers in unison to operate the. meanscontrolling the said valve connection whereby said valveis. closed, andmeans for movmg one of said levers independently of the other to permitsaid other lever to actuate said valve connection controlling meansmission means responsively to temperature conditions in said member andto time, and controlling said discharge means responsively to time.

12. The combination of a member, admission means thereto and dischargemeans therefrom and an automatic governing mechanism controlling saidadmission means responsively to temperature conditions in said memberand controlling said discharge means responsively to time.

13. The combination of a fluid containing member, fluid admission meansthereto and discharge means therefrom, a temperature responsive devicein the fluid containing member, amovable cam having a contour whichconforms to a desired time temperature characteristic, time controlledmeans for movingthe cam, means whereby the temperature responsive deviceis caused to cooperate With the contour of the cam to control the fluidadmission means according to said time temperature characteristic, andmeans operated by said time controlled means for controlling saiddischarge means.

14. The combination with a device to be regulated, a regulating devicetherefor, and a device responsive to the temperature of the device to beregulated, of a movable templet having a contour that conforms to adesired time-temperature characteristic, and means controlled by thecooperation of the templet and the temperature-responsive device forcontrolling the regulating device.

15. The combination with a device to be regulated, a regulating devicetherefor, and a device responsive to the temperature of the device to beregulated, of a movable templet having a contour that conforms to adesired time-temperature characteristic, time controlled means formoving the templet, and means whereby the temperature responsive deviceand the contour of the movable templet cooperate to control the heatregulating device according to said time-temper ature characteristic.

16. In a temperature regulating device, the combination of a heatsensitive element containing anexpansible fluid, a distant expansibleelement the expansion of which is controlled by the temperatureconditions adjacent to said heat sensitive element, a valve forcontrolling the supply of heating fluid, fluid-pressure means forcontrolling said valve, a second valve operated by the eX- pansibleelement for controlling said fluidpressure means, and a clock forchanging the relative adjustment of said expansible fluid containingelement and the second valve whereby to secure speclfled temperatures atpredetermined times, substantially as described.

peratures actually set up, departures from i the temperatures calledmeans.

18. A temperature controller comprising means for automaticallyeffecting a predetermined series of changes of temperature atpredetermined periods of time by controlling the flowliof a temperatureimparting medium, a thermo-se'nsitive member responsive to thetemperatures actually set up, and means controlled by said member andalso operative upon the flow of said temperature imparting medium tocounteract, in the temperatures actually set up, departures from thetemperatures called for by said first means.

19. The combination of an element to be regulated as to temperature, aregulating device therefor, a device responsive to the temperature ofvthe element to be regulated, a movable templet having a contourconforming to a predetermined time-temperature characteristic and meansincluding a lever cooperating with thetemplet and temperature responsivedevice to control said regulating device.

20. The combination of an element to be regulated as to temperature, aregulating device therefor, a device responsive to the temperature ofthe element to be regulated, a movable templet having a contourconforming to a predetermined time-temperature characteristic, a mainlever and an auxiliary lever pivotally mounted thereon, one of saidlevers engaging said templet and the other of said levers having anoperative connection with said temperature responsive device wherebysaid templet and temperature responsive device in cooperation with saidlevers control said regulating device.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing Witnesses.

for by said first ALFRED ROESUH.

Witnesses:

JOHN A. KnHLnNBEoK, FRANK F. KIRKPATRICK.

